Means business (6)
I believe the answer is:
agency
This clue is a double definition.
'means' is the first definition.
(I've seen this before)
'business' is the second definition.
(agency is a kind of business)
(Other definitions for agency that I've seen before include "Bureau; instrumentality" , "Office or business of one who does business for others" , "Cagney (anag.)" , "Travel --; dating --" , "Organisation providing a particular service" .)